Electrical plug and receptacle.



No. 754,863. PATENTED MAR. v15, 1904. G. W. GOODRIDGE. ELECTRICAL PLUGAND REGEPTAOLE.

APPLICATION FILED 00T. 9, 1903.

l0 IODEL.

WITNESSES INVENTOR' @Ma/.WA 5m/1MM i ATTORNEYS xmms vaina m, mom-Uma..wAsumoroN, n c,

N0. 754,863. Patented Marchy l5, 1904.

UNITED STATES PATENT OFFICE.'

GILBERT W. GOODRIDGE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TC THE BRYANTELECTRIC` COMPANY, OF BRIDGEPORT, CON NECTICU' A CORPORATION OFCONNECTICUT.

ELECTRICAL PLUG AND RECEPTACLE.

SPECIFICATION forming part of Letters Patent No. 754,863, dated March15, 1904.

Application led October 9, 1903. Serial No. 176,389. (No model.)

' T0 all 11171/0707/ i?? 771160Z/ 00700677111 front to back of theface-plate, as is customary, Be it known that LGILBERT W. GOODRTDGE, Iimprove the appearance of the face-plate and a citizen of the UnitedStates of America, rereduce the number of separable parts by per- 50siding in Bridgeport, in the county of Fairmanently securing the screwsto the rear of the eld, State of Connecticut, have invented Implate, asbest shown in Fig. `S-that is, by first provements in Electrical Plugsand Receptaboring out of the back of the plate a hole of cles, of whichthe following is a specication. the diameter of the screw head, (seeleft of The object of my invention is to simplify Fig. 8,) theninserting the screwhead and 55 and improve the construction ofelectrical then by a suitable tool forcing down the ad- IO plugs andreceptacles; and this object I attain jacent metal over the beveled faceof the screwin the manner which I will now describe. head, as shown atthe right of Fig. 8, to firmly In the accompanying drawings, Figure I isfasten the screw to the plate. a vertical section of the plug, and Fig.2 is a The main body E of the plug is of porcelain 60 correspondingsection of the receptacle. Fig. or other suitable insulatingA materialand is 3 is a vertical section of the plug at right anmadehollow. It ispreferably cylindrical, with gles to the view Fig. l, while Fig. 4 is acora cylindrical chamber open at the rear or unresponding section of thereceptacle. Fig. 5 der side to receive the Correspondingly-shapcd is aface view of the receptacle when the facebutton or diaphragm Cr, ofinsulating' mate- 65 plate has been removed. Fig. 6 is a face view rial,which carries on one side the contact-pins zo of the body of the plugwhen the contact-car- D D and on the other side, within the body, ryingpiece has been removed. Fig. 7 is a the connectinglugs and bindingscrewsfor plan view of the contact-carrying part when the wires J. Back ot'this chamber receiving detached from the body of the plug. Fig.` 8 thisdiaphragm Gr there is a chamber of nar- 70 is a sectional view of thereceptacle face-plate rower width (oblong, as shown in Fig. 6) to toshow how the screws are secured. contain the lugs and binding-screws andalso The bod A of the rece tacle, which is of to allow a knot to be tiedin the wires J.

y I) porcelain or other suitable insulating mate- The contact-carryingdiaphragm G is serial, is preferably cylindrical and has formed cured inplace, as shown in Fig. 3, by screws 7 5 in it twolongitudinal holes toreceive two plain g g, inserted from the upper or front side of 3o metaltubes B B, which are held in place by the plug through openings in thethickened pins b passing through lateral openings a ct walls formed bymaking the chamber'for the and threaded into the tubes B, as shown inconnections and wires oblong, Fig. 6. These Fig. 2. The rear ends of thetubes are proscrews g g are held in place by nuts g (1, let 8O videdwith laterally-inserted binding-screws into the face of the diaphragm,said nuts be- Z/ b', by'which to connectV up the bared ends ing heldtherein by sealing-wax fw. of the electrical conductors. The forward (inThe pins D D have shoulders (Z (Z to abut the drawings the upper) endsof the tubes B B against the diaphragm. Back of these shoul- -are slit,as shown in Fig. 2, to receivethe pins ders the pins are threaded andscrewed into D D of the plug, Fig. l. The metallic faceand held in placeby the L-shaped lugs H H, plate C for the receptacle has rubber or otherthe upright arms oi' which carry the bindinginsulated bushings c 0around the openings, screws /L /t for the wires J within the hollowthrough whichV the pins D of the plug pass. body E. This face ,issecured to the body of the re- I claim as my invention-d ceptacle byscrews F, carried by the plate and 1. A plug-receptacle, consisting ofan insu- 45 passing through openings a in the body A, lating-body havingholes through it, with a Fig. 4, and held by nuts f. Instead ofpassplain metal single tube in each of said holes, ing these screws Fthrough openings from carrying a binding-screw at its rear end, and

said button` contacts on the inner side thereof within said chamber,securing-screws for the button passing through the thickened walls ofthe plug-body, and nuts for the securingscrews.

In testimony whereofI have signed my name to this specification in thepresence of two sub- 2O scribing witnesses.

GILBERT `W. GOODRIDGE.

l/Vitnesses:

N. lV. HARDER, H. G. lVALEs.

